Over sampling and used in temperature compensation for acceleration sensor

In the test system, a lot of analog tests in need of the A/D conversion. There are two key indicators in A/D conversion, they are effective resolution and signal to noise ratio. Through the theoretical analysis of over-sampling theorem, and the characteristics of white noise signal, A/D converter add 1 each time, the resolution can be 4 times the sampling frequency of over-sampling to achieve. Actual in the temperature test system, using ATmega16 embedded 10-bit ADC, which can successful implementation of a 12-bit ADC conversion accuracy, and improve the measurement resolution.